Automatic interlocking attachment for window sashes



Feb. 26 1924.. 1,484,685

H. c. TROST AUTOMATIC INTERBOCKING ATTACHMENT FOR WINDOW SASHES Filed April 6, 1925 npnlication filed. fipril 5,

To all whom it may concern:

Be it known that T, H NRY C. inos'r, a citizen of the United States of America, and a resident of El Paso, county of El Paso, and State of Texas, have invented certain new and useful Improvements in Automatic Interlocking Attachments for Window Sashes, of which the following is a full and clear specification.

This invention has relation to the class of devices particularly covered by my Patent No. 1,439,585, dated December 19, 1922, and the object of my present invention is to so construct the devices that they may be manufactured at a minimum cost, as more fully hereinafter set forth.

In the drawing Fig. 1 is a side view of a portion of a window showing my invention applied thereto Fig. 2 is a detail perspective view of one of thetrip-plates Fig. 3 is a plan of the'tripplate blank, from which the device is stamped up;

Fig. t is a detail perspective view of locking member.

Referring to the irawing annexed by reference-numerals, 5 designates the be eplate of the tripping member, which is fastened, in a diagonal position on the sash, by a series of screws 6. Projecting outwardly from the longitudinal edges of this base-plate are two flanges 7, and projecting laterally from the respective ends of these flanges are cam-lugs 8. These trip-plates are used in pairs, the plates of each pair being arranged in the sashes in reversed relation, as fully set forth in my former patent. The flanges 7 form diagonal channel and the parts 8 form cam-lugs, and these parts function set forth in my aforesaid patent.

By making the trip-plate in the manner set forth, it will be obse wed that it may be stamped up from a single piece of sheetmetal properly shaped, thus greatly simplifying the method of manufacturing the tr1p plate and keeping its cost down to a nummum.

The locking member, carried by the other sash as usual, consists of a single piece of sheet-metal stamped to shape, one end 9 being adapted tobe secured to the sash and the other end 10 being adapted to project away from the edge thereof and afford a support or hanger for a pendulum 'locklng the Serial No. 630,353.

device. in the present instance, this locking device consists of a metal rod bent to form two pendent members 11 {UK 12 and an intermediate portion 13 which extends through a hole in the support 10 and forms the journal of the device. the free end of the member 11 having its extreme end bent to form a lug 14: which. stands at rightangles to the face of the supporting member 10. This locking member hangs loosely on the journal 13 and in its normal position the two members 11 and 12 stand vertical. 4 the cam hooks 8 and the channel of the tripplate in the manner set forth in my former patent. The pendent member 12 serves as a weight to ensure the tendency of the locking member to normally swing to a vertical position. It will be observed that this locking device may be made at an extremely low cost, consisting, as it does, of but two parts, each of which may be readily and inexpensively made. The device also affords maximum strength in that it is adapted to stand severe strains without being rendered inoperative. One of the factors which renders this locking device easily made and reliable in operation is.

that I do away with separate pivots for the pendulum locking member.

What I claim is:

1. An automatic interlocking attachment for window sashes of the type set forth embodying a tripping member adapted to be attached to one of the sashes and a locking member adapted to be attached to the other sash, the locking device consisting of a supporting plate adapted for attachment to the sash and pendulum locking member pivotally mounted thereon, said locking member consisting of a lug-carrying member on one side of the support and a pendent weight on the other side of the support.

2. An automatic interlocking attachment for window sashes of the type set forth embodying a tripping member adapted to be attached to one of the sashes and a locking member adapted to be attached to the other sash, the locking device consisting of a supporting plate adapted for attachment to the sash and a pendulum locking member pivotally mounted thereon, said locking member consisting of a rod bent to form two pendent portions having an intermediate journal, one of said portions being provided at its free end with a lateral lock-lug.

The lock-lug 14L cooperates with 3. An automatic interlocking attachment for Window sashes of the type set forth einbodying a tripping member adapted to be attached to one of the sashes and a locking member adapted to be attached to the other sash, each of these tripping members einbodying a base-plate, a pair of diagonal flanges forming a diagonal channel, and alaterel hook formed on the end of each of these channels, the whole being bent up 10 from a single piece of sheet-metal.

In testimony whereof I hereunto afiix my signature.

HENRY C. TRUST.

Witnesses GEORGE W. HERLIN, GEO. E. Tnos'r. 

